Followed the instruction of the link above. Sent the application form with screenshot of Tier status page, picture of physical card and flight record of past 12 months. (Remember that you should send the flight record of last 12 month but not the record of 2019. If you apply at november 2020, you should send flight record from november 2019)
Applied at 2020/11/02 and got approval on 2020/11/30.
Dear Mr. XXX,
Thank you for your patience.
We are glad to inform you that your application of Other Airline Member Card Tier Match has been approved. Your card tier will be upgraded to Explorer and you will receive an upgrade notification by mail from COSMILE with the newest card tier validity.
An Explorer member can enjoy benefits including extra baggage allowance, priority baggage handling and accessing STARLUX Airlines VIP Lounge with 1 companion.
For more details about the benefits of Explorer, please refer to COSMILE Tiers and Benefits.
Wish you a pleasant day!
STARLUX Customer Service Center